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Thread: macro focusing off

  1. #1

    Default macro focusing off

    was using
    85mm lens with my 350D with a +4 closeup filter on a tripod with timer
    for a shot of a kiwi.
    but even if the screen is sharp
    but i find that the focusing is off in the preview.
    i get better results if i slightly turn the focusing knob myself.

    is this normal? or shld I get the focusing checked? or is it a result of the filter?

  2. #2

    Default Re: macro focusing off

    Quote Originally Posted by slaam View Post
    was using
    85mm lens with my 350D with a +4 closeup filter on a tripod with timer
    for a shot of a kiwi.
    but even if the screen is sharp
    but i find that the focusing is off in the preview.
    i get better results if i slightly turn the focusing knob myself.

    is this normal? or shld I get the focusing checked? or is it a result of the filter?
    I don't quite understand a couple of things. Your subject is a kiwi, the bird? You don't need a close-up filter for that, I reckon.

    Another thing, what do you mean by "the screen is sharp"?

    BC

  3. #3

    Default Re: macro focusing off

    Quote Originally Posted by Scaglietti View Post
    I don't quite understand a couple of things. Your subject is a kiwi, the bird? You don't need a close-up filter for that, I reckon.

    Another thing, what do you mean by "the screen is sharp"?

    BC
    haha i tot posting the subject name wld be clearer.. sorry
    kiwi the fruit!

    thru the viewfinder aka focusing screen, the hairs of the fruit are sharp
    but after taking the pic on the lcd preview it looks off focus..

  4. #4

    Default Re: macro focusing off

    Quote Originally Posted by slaam View Post
    was using
    85mm lens with my 350D with a +4 closeup filter on a tripod with timer
    for a shot of a kiwi.
    but even if the screen is sharp
    but i find that the focusing is off in the preview.
    Yes normal

    when you look thru the viewfinder, DOF is shallow due to the lens is open at the largest aperture

    when you took the photo and preview at the LCD, DOF is depend on your aperture used. If you use small aperture, the object will appear wider DOF.
    See my Photo Gallery at the Clubsnap

  5. #5

    Default Re: macro focusing off

    The 350D LCD isn't really very good. It's dim and has a colour cast. There are some threads in the Canon forum about fuzzy pics when viewing magnified pics on the LCD - it's a known problem.

    As long as it looks sharp on your desktop monitor, it's OK

  6. #6

    Default Re: macro focusing off

    Quote Originally Posted by slaam View Post
    haha i tot posting the subject name wld be clearer.. sorry
    kiwi the fruit!

    thru the viewfinder aka focusing screen, the hairs of the fruit are sharp
    but after taking the pic on the lcd preview it looks off focus..
    I see...

    How does it appear on your computer? If it is still off, I can think of 2 reason.

    You mentioned that you took the shot with timer. Does your camera refocus taking the shot? If it does, it may have focused on the wrong subject.

    The other possibility is the focus calibration of the camera is off. You need to correct it at the service center.

    BC

  7. #7
    Moderator ortega's Avatar
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    Default Re: macro focusing off

    use manual focusing via the viewfinder

  8. #8

    Default Re: macro focusing off

    Quote Originally Posted by megaweb View Post
    Yes normal

    when you look thru the viewfinder, DOF is shallow due to the lens is open at the largest aperture

    when you took the photo and preview at the LCD, DOF is depend on your aperture used. If you use small aperture, the object will appear wider DOF.
    wow macro expert answering my qn!
    heh
    i understand about this part (or maybe i am wrong)

    when i view thru viewfinder its at the largest aperture.
    but i use AP mode so that the apperture is at f8

    so by right the preview should be sharper (or rather wider DOF) than wat i see in the viewfinder yah?

    oh to answer the timer mode thing, i half pressed to focus then i press completely so it can't be off focus yah?

    my gripe is that I have to 'adjust' the AF's choice of focus pt by a wee bit to get sharp photos for macro.
    so not sure if its camera limitations or somethings wrong with the focusing mechanism

    thanks for the helpful replies!

  9. #9

    Default Re: macro focusing off

    as what ortega mentioned, manual focusing is the way to go for macro shots..

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